US2845231A

US2845231A - Machine for winding web rolls

Info

Publication number: US2845231A
Application number: US488865A
Authority: US
Inventors: Grettve Karl Einar Lage
Original assignee: Lilla Edets Pappersburks A B
Current assignee: Lilla Edets Pappersburks A B; Lilla Edets Pappersburks A-B
Priority date: 1954-03-06
Filing date: 1955-02-17
Publication date: 1958-07-29
Anticipated expiration: 1975-07-29
Also published as: DE1017017B; FR1123663A; NL97016C; NL95892C; GB768059A

Description

July 29, 1958 K. E. l.. GRETTVE MACHINE FOR WINDING WEB ROLLS 6-Sheets-Sheet 1 Filed Feb. 17, 1955 July 29, 1958 K. E. L. GRETTVE MACHINE FOR WINDING WEB ROLLS 6 Sheets-Sheet 2 July 29, 1958 K. E. L. GRETTVE MACHINE FOR wINoING WEB RoLLs 6 Sheets-Sheet 5 Filed Feb. 17. 1955 July 29, 1958 K. E. GRETTVE MACHINE FOR WINDING WEB ROLLS 6 Sheets-Sheet 4 Filed Feb. 17. 1955 INVENTOR KARL EINAR LAGE GRETTVE BY v Mull/14%, 14+ Pou/ A T TORNE YS Jul)r 29, 1958 K. E. L. GRETTVE 2,845,231

MACHINE FORWINDING WEB ROLLS Filed Feb. 17, 1955 6 Sheets-Sheet 5 lNvENToIQl KARL EINAR LAGE GRETTVE M+ PWJL AT TORNE YS K. E. L. GRETTVE MACHINE FOR WINDING WEB ROLLS July 29, 195s 6 Sheets-Sheet 6 Filed Feb. 17, 1955 wwf/W36 WAQ f//w iff aff/fw;

United States Patent O i MAcrnNE FoR WINDING WEB ROLLS Karl Einar Lage Grettve, Lilla Edet, Sweden, assignor to Lilla Edets Pappersbruks A.B., Lilla Edet, Sweden, a corporation of Sweden Application February 17,1955, Serial No. 488,865

Claims priority, application Sweden March 6, 1954 Claims. (Cl. 242-56) In the art of winding rolls of paper, it is conventional to unwind a web of wall paper or any other paper web of comparative stiffness from a supply roll, and to feed said web in a loop to a winding machine in which the end of the web is fed into a winding station comprising a number of rollers which are driven in the same direction of rotation, and between which the web is wound without the use of a cylindrical core. The machine is provided with a cutter roll or some other suitable device for cutting the web when the roll wound in the winding station has reached la certain, predetermined diameter or length of the web. The winding machine is then stopped, and the roll is removed. The driving means of the supply roll is, however, working continuously, and this causes the abovementioned looping of the web when the winding machine is brought to a standstill. The operator of the machine must be careful to adjust the speed of winding to prevent this loop from becoming too long, as this would cause the web to fold. If the looped web slides against any fixed part of the machine, there may easily arise scratches in the web. In order to avoid this inconvenience, the suggestion has been made to provide a continuous winding and cutting of the web so that the web will not form a loop. According to this suggestion, three winding stations comprising rotating rollers are arranged on a drum-like rotor in such a way that the winding stations rotate around the rotor axis during the winding operation. Such a winding machine is rather complicated and therefore expensive to manufacture, and furthermore, it is rather diilicult to properly guide the web from the supply roll to the various winding stations. It has also been suggested to provide a winding machine with a switching tongue which is arranged to guide the free end ofthe paper web into two winding stations alternately.

A common feature of all these machines is that only such relatively thick paper as wrapping paper and' wall paper may be handled therein. On the other hand, it is not possible to use these machines for winding into rolls such soft material as for example crepe paper for sanitary purposes. This invention relates to a machine in which thick and stiff paper as well as very soft paper and any other similar material may be wound from a supply roll into smaller rolls. The machine comprises a drum which feeds the web from the supply roll. The invention is characterized by the fact that the machine is provided with at least two winding stations situated at the periphery of the drum and in series in the direction of the travel of the web, which stations are passed through by each roll, and further provided with means for cutting the web before the roll leaves the second winding station. When crepe paper is to be wound, a pasteboard cylinder is suitably used as a core which at a given moment is fed from a supply into the machine. Such pasteboard cylinders are not necessary when e. g. wrapping paper is to be wound.

The invention is made clear with reference to the attached, partly diagrammatical drawings, on which:

Fig. 1 is a vertical longitudinal section through a ma- 2,845,231 Patented July 29, 1958 2 chine for winding soft paper, especially crepe paper, into rolls;

Fig. 2 shows, on a samewhat larger scale, a similar section through the machine at the first winding station and with a roll being wound therein;

Fig. 3 shows on the same scale as Fig. 2 a similar secl tion of the machine with a roll being wound in the second winding station;

Fig. 4 shows a vertical longitudinal section of one of the gables of the machine through the line IV-IV in Fig. 3;

Fig. 5 shows a vertical cross section through the two winding stations in a modified machine for winding wrapping paper and similar, somewhat stiffer material;

Fig. 6 is a partly broken plan view of a winding machine according to the invention but with another embodiment of the means for cutting the web transversely;

Fig. 7 shows a vertical cross section of the machine through the line VII-VII in Fig. 6;

Fig. 8 shows a similar cross section but through the line VIII-VIII in Fig. 6;

Fig. 9 is, on a larger scale, a side view of the lower branch of a fork belonging to the cutting means and provided with a resilient element; and

Fig. l0 is a similar side view of the fork branch but according to a modification of the invention.

On a transverse shaft 2 journalled at the gables 1 of the machine, is rotatably driven a drum 3, the mantle surface of which may form a whole cylinder, but which according to the embodiment shown is composed of several sections 4 (Fig. 4), axially mounted one close to the other and leaving a space 5 between them. At one end of the machine, the gables 1 are provided with planes 6 inclined toward the drum 3 along which planes journal boxes 7 may slide, said journal boxes supporting the journals of a shaft 8 which extends centrally through the supply roll 9. In the example shown, the supply roll is conceived as containing crepe paper. The inclination of the plane 6 is such that the supply roll 9 during the winding of the web with its periphery always rests against the drum 3 which feeds the web to the rst winding station 10 of the machine.

The winding station 10 comprises a load roller 11, a winding roller 12 and the drum 3. The load roller 11 is rotatably journalled on a transverse shaft 13 which at its ends is supported by two levers 15 which are each pivoted on a pin 14 at the gables 1. The load roller is held in position by an adjustable stop screw 16, against which the end 17 of the lever 15, situated opposite the load roller 11, rests in such a position that the roller 11 at its lower position is also situated at a smaller distance from the periphery of the drum 3. The winding roller 12 is rotatably journalled on a transverse shaft 18 which at its ends is supported by two knee levers 19 close to the gables 1 of the machine. The levers are swingably mounted on a transverse shaft 2t). The winding roller 12 is driven with a peripheral velocity which is somewhat larger than that of the drum 3, and in the'same direction of rotation 'as the drum. Through the action of the end 21 of the knee lever 19 against the piston 22 in a pressure box 23 with a compressed air loaded diaphragm, the winding roller 12 is held at a minute distance e. g. Q6-l of an inch from the periphery of the drum 3. The roller 12 is held in this operating position by a draw spring 24 attached between the pressure box 23 and the end 21 of the lever 19.

The second winding station 25 is situated at the periphery of the drum 3 and in the direction of web travel, beyound and below the winding station 10. The winding station 25 comprises, apart from the drum 3 and the winding roller 12, a second winding roller 26 which is driven with a peripheral velocity which is greater than the periph- Ito thedrum 3 (Figs. 1 and 2), is situated at a distance from the periphery of the drum depending on the diameter of the roll 46 which comes from the winding station .10. Against the lower side ofthe arm 29, the piston 31 of a pressure box 32, provided with a diaphragm, is arranged tobe operated at a given moment.

At the upper end of the machine is provided an inclined roller way 33 for a number of pasteboard cylinders 34. Oppositethe lower end of the roller way 33 are arranged two sector-shaped plates 35 which are mounted on a transverse shaft 36 and at the periphery are provided with a notch 37 for engaging only one pasteboard cylinder 34 at a time. Outside the periphery of the plates are arranged guides 38 for guiding the cylinder 34 down towards the drum 3 when the plates 35 swing in a clock-wise direction according to the drawings. On the plates 35 is pivoted Athe outer end of a piston 39 which is displaceable in a cylinder 40 connected to a source of compressed air.

At each end 'of the winding station 10 is a nozzle 41 which is directed parallell to the mantle of the drum 3 and connected to the source of compressed air, said nozzles at a 'given moment delivering a violent blast of air across the web 42 in order to sever said web. The machine is, moreover, provided with a number of air valves 43, 44 and 45 and conduits 43', 44' and 47 leading from the valves, of which the valve 43 is arranged to be opened by the action of the end 17 of the lever arm when the load roller 11 is elevated to a certain position, and the valves 44 and 45 are arranged to be opened by the arm 29 of the lever 28 when the latter swings in a counter clockwise direction according to the drawings.

Before the machine is started, the drum 3 is turned counter clock-wise according to the drawing by hand, whereby the web 42 is fed into the first winding station where a pasteboard cylinder 34 has been put between the

rollers

11 and 12, also by hand. When the machine is now started, the pasteboard cylinder 34 is forced to rotate in a clock-wise direction in the station 10 and is clamped between the

rollers

11 and 12 and the drum 3. The web 42 is thereby wound onto the pasteboard cylinder and grows in size. With this, the roller 11 is elevated, whereby the lever is swung clock-wise until the arm 17 opens the valve 43 which causes air to be forced through conduit 43' into the pressure box 23. The piston 22 swings the lever 19, against the pull of the spring 24, counter clock-wise to the position indicated in Fig. 2 in chain-dotted lines. The roll 46 (Fig. 2) then falls down into the winding station where it is picked up by the roller 26 (Figi 3). Clamped between the winding

rollers

12 and 26 and the drum 3,`the roll 46 during its rotation grows more and more in size. Thereby, the roll presses against the roller 26 which is pushed away from the drum little by little whereby the lever 28 swings counter clock-wise. When the roll 46 has reached a certain diameter, the arm 29 contacts the valve 44 which Apasteboard cylinder 34 in the notch 37. Said cylinder falls onto the drum 3 and is carried along by the drum ,during elevation of the load roller 11 (see the chainvdotted lines in Fig. 3.) which, however, immediately returns to the position indicated in full lines in Fig. 3. The cylinder 34 is picked up by the winding roller 12 and is `rotated clock-wise, due to the friction between said roller,

the load roller 11 and the web 42 on the drum 3. During a roll.

this operation, the roll 46 in the station 25 has rflched the desired diameter, and the valve is opened through the action of the lever 28. The valve 45 then lets compressed air through conduit 47 to the nozzles 41, and the violent blast thereby caused across the station 10 quickly severs the web 42. Immediately thereafter, compressed air is forced into the pressure box 32 through conduit 47, the piston 31 pressing against the arm 29 and swings the lever 28 ,counter clock-wise, whereby the roller 26 disengages from the fully wound roll 46 so that it may fall down onto a conveyer (not shown). The current of air from the nozzles 41 forces the free end of the web 42 from the supply roll 9 upwards and towards the `load roller 11 so that the Web is caught between the load roller and the pasteboard cylinder 34 which is fed into the station 10, whereafter the winding of a new roll begins. The cycle of operation is now automatically repeated as described above.

When the drum 3 is composed of sections 4, as in the embodiment shown, it may be convenient to arrange tubes 47, connected to the source of compressed air, in the spaces 5 between the sections 4 (as indicated in chaindotted lines in Figs. 1 and 4). In this case too, it may be convenient to use the nozzles 41 to ensure an effective severing of the web 42.

Other means for severing the web 42 may, however, be considered, e. g. a rotating knife of conventional design.

Another method of cutting the web 42 is to provide the 'pasteboard cylinder 34, before it is fed onto the drum 3, with a longitudinal line of adhesive or, possibly, some single spots ofglue along the-cylinder. When such a cylinder 34 provided with adhesive enters the winding station 10, the adhesive will make the web 42 stick to the cylinder, and when the cylinder is forced to rotate in the station` 10, the web 42 is simply torn off transversely.

The machine may be provided with ra'number of cutting rollers 49 mounted on av transverse shaftv 48, which rollers cut the web 42 into longitudinal strips. The machine may also be provided with corresponding cutting means for cutting the pasteboard cylinder 34 into pieces corresponding to the width of the web strips. These cutting means (not shown on the drawing) should be so arranged that the cylinder 34 `is'cut` inside the winding station 10. The

rollers

11 and 12 must then be composed of sections, leaving space for the cutting means in the spaces between the various sections.

Finally, the machine may be provided with at least one more station in which the roll`46 from the section 25 is provided with a wrapping. Said wrapping is simply fed from a supply roll into the'third winding station Awhere' it is wrapped laround thefully'wound roll 46 through the action of the rotation of the roll. y

In Fig. 5, the modified machine is shown arranged for 34 as `a core. "In this case,:the roller 11 must be provided with peripheral flanges 50 which engage with corresponding peripheral grooves 51 in the winding roller 12. In the space between the sections 4 of the drum 3 arearranged uprights 52 each of which supports an arm 54 at the upper end thereof which is pivoted on a pin 53, the end of said arm, 4which is turned towards the periphery of the drum 3, being provided with a rotatably mounted guide pulley 55. The arm 54 is normally held by means of a draw `spring 56 in a position in which the roller 55 partly engages with an opposed groove 51 in the winding roller 12. A knife is indicated at 58 which at a given moment is swung with its edge against the periphery of the drum 3 for cuttingthe web '42.

When the web 42 is fed by the drum 3 into the station 10,'the free end of the web'is directed by the segments of the guide pulleys protruding outside'the periphery of the drum into the station 10 where the web is forced by the

rollers

12 and 11 to turnclock-wise and thus form At lrst, the roller `11 rotates clock-wise, driven by the drum 3. When, however, it is elevated -by the paper roll being wound in the station 10, it is forced by said paper roll to rotate counter clock-wise (see the position indicated in chain-dotted lines in Fig. When the paper roll is permitted, due to the youtward swinging of the roller 12, to fall down into the winding station 25, the guide pulleys 55 are p-ushed by the tension in the web 42 'and against the action `of the springs 56, inside the periphery 'of the drum 3 (see the position indicated in Fig. 5 in chain-dotted lines) without damaging the web.v After the cutting of the web, the tension in the web ceases, and the springs 56 then swing the arms 54 With the pulleys 55 back to the original posi-tion so that they once more direct the free end of the web 42 into the station 10, whereafter the Cycle lof operation is repeated.

A scraper is indicated by S9 (Fig. l), which during the rotation of the drum 3 scrapes the drum mantle and keeps it clean. An abutment part 60 is arranged for limiting the downward swing of the Varm 21.

-In Figs. 6-10 there is shown an improved embodiment -of the means for the transverse severing of the web. Instead of compressed air, there is used in this embodiment only mechanical means which expedites the severing of the web with the feeding drum acting as an abutment. Thereby, the web is severed along a mainly straight transverse line which is not possible to obtain by the use of compressed `air which is blown parallel to the longitudinal direction of the drum. n

The winding roller 12 which is common for the two winding stations and 25 is composed of `a number of circular discs 61 which, together with spacers 62 are combined to form a `unit which is rotatably mounted on the shaft 18 which is fixed to the ends of the two lever arms 19. This shaft thus does not rotate with the driven winding roller 12. On the shaft 18 and -inside Ithe knee levers 19 are mounted two bracket arms 63, turned mainly radially youtwards in relation to the drum 3. The outer, free ends of these bracket Iarms serve as bearings 64 for two co-axial pins 65. These pins each protrude from a disc-shaped nave 66. mounted on, each end `of a supporting shaft 67 which .extends parallel to the shaft 1S of the wind-ing roller 12 .and -also parallel to and at some distance fro-m the pins i65. A-t `one of the pins 65 (according to Figs. 6 and 7 4only the pin arranged at the right side of the machine) iis mounted the lower end of a lever 68, the upper end of 'which is pivotally connected by a pin 69 to the outer, fork-shaped end of a piston rod 70 which is axially displaceable in a cylinder 72 connected to the compressed air line 71. The cylinder `72 is pivotally mounted by lmeans of la sidewards directed pin 73 on the upper end of a bracket arm 74 which at its lower end is fixed to the shaft 13 of the winding roller 12.

The bearing shaft 67 extends through one end of a number lof fork-shaped members 75 suitably made from wood -or plastic material and is slidable therethrough, which members with their two branches 76 rand 77 engage in the gap 7 S -between two adjacent circular discs 61 of the winding roller 12. The branches 76, 77 which are part lel to each other each clamp between them a spacer 62 on which the upper branch 76 of fork-shaped member 7S rests. According to the embodiment shown in Figs. 6-10, the lower branch 77 is provided with a bent spr-ing '79 in the form of a flat steel bar, the mounting plate 80 of which is fixed to the lower branch 77 by means of screws 81, and which is provided with `a loop S2 and terminates in a resilient arm 83.

The cutting member is so adjusted that when the forks 7S are at the inoperative position (indicated in chain-- dotted lines in Fig. 8), the lower end of free arm of the steel spring 79 is located at a minute distance radially youtwardly of the feeding drum 3 of the machine and inside the periphery of the winding roller 12. When the roll 46 is finished in the winding station 25, com- The naves 66 support, and are pressed air is fed to the cylinder 72 whereby the piston rod 70 is displaced towards the left according to Fig. 2 and brings the lever 61 and naves 66 with the supporting shaft 67 from the position indicated -in chain-dotted lines to the position indicated in full lines in Fig. 7. The supporting shaft 67 tand thereby also the forks 75 will thus be moved closer `to the feeding drum 3. When free end of the arm 83 of the spring 79 is resiliently pressed against the feeding drum 3, the web 42 passing between the resilient arms 83 and the feeding drum 3, is severed. The resilient arms at the same time press the end of the web 42 conveyed by the drum 3 up into the first winding station 10 where the winding of a new roll Iis immediately begun.

Instead of at steel springs 79, other resilient elements could be used. In Fig. 10, the lower branch 77 has been provided at its lower end with a pin 84 on which is placed a casing 8S of rubber or some other, suitably elastic material. The lower free edge 86 of the casing 85 is preferably horizontal.

As mentioned above, the operating of the severing means as shown and described is carried out by means of compressed air, but the same movement may, of course, be performed by other means, for example electrically.

The embodiments shown and described should be considered as examples only, andthe design of different parts of the machine may be altered in several ways within the scope of the following claims. Instead of compressed air, mechanically or electrically driven devices may be used for the outward swinging of the winding

rollers

12 and 26. The machine may be combined with a device for perforating the web. It may also be used for winding textile fabrics into rolls. The arrangements for driving the drum 3 and the

Winding rollers

12 and 26 `are not shown, as they may be constructed in several ways, well known to a man skilled in the art. Instead of the guide pulleys 55, there might be used thin steel springs mounted on the upper end of the uprights 52, said springs having their free, upwardly turned end reaching outside the periphery of the drum 3, extending into the winding station 10 and there guiding the free end of the web 42 upwards, said springs being bent inside the periphery of the drum 3 by the tension in the web when the paper roll is situated in the station 25.

What I claim is:

l. A machine for winding a web from a large supply roll intoy smaller rolls comprising a drum adapted to feed the web from the supply roll, two winding stations situated at the periphery of the drum and in series in the direction of the travel of the web, said stations being passed through by each smaller roll, means for cutting said web before a smaller roll leaves the second winding station, a winding roller driven in the same direction as said drum, a freely rotatable load roller elevatable by a smaller roll as it increases in size during the winding of the web thereon, said winding roller, load roller and said feeding drum together defining said first winding station, said winding roller being swingable away from said drum at a certain predetermined diameter of a smaller roll for permitting the smaller roll to fall down to the second winding station.

2. A machine for winding a web from a large supply roll into smaller rolls comprising a drum adapted to feed the web from the supply roll, two winding stations situatedat the periphery of the drum and in series in the direction of the travel of the web, said stations being passed through by each smaller roll, means for cutting said web before a smaller roll leaves the second winding station, a winding roller driven in the same direction as said drum, a freely rotatable load roller elevatable by av smaller roll as it increases in size during the winding of2 the web thereon, said winding roller, load roller and said feeding drum together. defining said first winding station, said winding roller being swingable away from Vsaid drum at acertai'n predetermined diameter of a -smaller roll for permitting the smaller roll to fall down to the second winding station, vsaid winding roller in the first winding station being driven at a somewhat greater peripheral speed than said drum, and said winding roller being spaceda minute distance from said drum at its operative position.

3. A machine for winding a web from a large supply roll 'into smaller rolls comprising a drum adapted to Vfeed the web from the supply roll, two winding stations situated at the periphery of the drum and in series in the direction of the travel of the web, said stations being passed through by each smaller roll, means for "cutting said web before a smaller roll leaves the second winding station, a, winding roller driven in the same direction as said drum, a freely rotatable load roller elevatable by a smaller roll as it increases in size during the winding of gthe web thereon, said Winding roller, load roller and said 'feeding drum together defining said first winding station, said winding roller being swingable away from said drum at a certain predetermined diameter of a smaller roll for permitting the smaller roll to fall down to the second winding station, levers pivoted to said machine on which the ends of said load roller are rotatably mounted, and releasing means actuated by one of said levers at a predetermined elevation of said load roller for effecting an outward swinging of said winding roller from said drum sufficiently to allow a smaller roll to fall from said first winding station.

4. A machine for winding a web from a large supply lroll into smallerrolls comprising a drum adapted to feed the web from the supply roll, two winding stations situated at the periphery of the drum and in series in the 'direction of the travel of the web, said stations being passed through by each smaller roll, means for cutting said web before a smaller roll leaves the second winding station, a winding roller driven in the same direction as said drum, a freely rotatable load roller elevatable by a smallerroll as it increases in size during the winding of the web thereon, said winding roller, load roller and said feeding drum together defining said first winding station, said winding roller being swingable away from said ldrum at a certain predetermined diameter of a smaller roll for permitting the smaller roll to fall down tothe second winding station, and a second winding roller below said winding roller, said second winding roller, said feeding drum and said winding roller in said first winding station together defining the second winding station, said second winding roller being swingable away from said drum by a vsmaller roll which'is increasing in siz'e during the'period it voccupies the second winding station, said second winding roller being swingable for permitting the smaller roll to leave said second winding `station.

5, A machine for windinga web from a large supply Aroll'into smaller rolls comprising a drum adapted to feed the web from the supply roll, two winding stations situ- 'ated at the periphery ofthedrum and in series in the direction of the travel lof the web, said stations being passed through by each smaller roll, means for cutting said web before a smaller roll leaves the second winding station, a winding roller driven in the same direction as said drum, a freely rotatable load roller elevatable by a smaller roll as it increases `in size during the winding of the web thereon, s aid winding roller, load roller and said feeding drum together defining said rst winding station, said winding roller being swingable away from said drum at a certain predetermined diameter of a smaller roll for permitting the smaller roll to fall down to the second Winding station, and a second winding roller below said winding roller, said second Winding roller, said feeding drum and said winding roller ,in said first winding station together defining the second wind' ing station, said secondwinding roller being swingable away from said drum by a smaller roll which is increas- 8 ing in size during 'the period it 'occupies these'condwinding station, said second winding roller being swingable for permitting the smaller roll to leave Vsa'id second winding station, `and means actuated by the outwardly swinging second winding roller for operating said means for cutting said web.

6. A machine for winding a web from a large supply roll into smaller rolls comprising a drum adapted to feed the web from the supply roll, two winding stations situated at the periphery of the drum and in series in the direction cf the travel of the web, said stations being passed through by each smaller roll, means for cutting said web before a smaller roll leaves the second winding station, a winding roller driven in the same direction Vas said drum, a freely rotatable load roller elevatable by a smaller roll as it increases in size during the winding of the web thereon, said winding roller, load roller and said feeding drum together defining said first winding station, said winding roller being swingable away from said drum at a certain predetermined diameter of a smaller roll for permitting the smaller roll to fall down to the second winding station, and a cylinder feeding device comprising two vertically positioned sector-shaped plates each pivoted to said machine and each swingable in a vertical plane and each having a notch therein at the periphery thereof for receiving a pasteboard cylinder, and two guides mounted outside the periphery of said sectorshaped plates for guiding said pasteboard cylinders down onto said drum to a position thereon located on the side of said load roller adjacent said supply roll.

7. A machine for winding a web from a large supply roll into smaller rolls comprising a drum adapted to feed the web from the supply roll, two winding stations situated at the periphery of the drum and in series in the direction of the travel of the web, said stations being passed through by each smaller roll, means for cutting said web before a smaller roll leaves the second Winding station, a winding roller driven in the same direction as said drum, a freely rotatable load roller elevatable by a smaller roll as it increases in size during the winding of the web thereon, said winding roller, load roller and said feeding drum together defining said first winding station, said winding roller being swingable away from said drum at a certain predetermined diameter of a smaller roll for permitting the smaller roll to fall down to the second winding station, said means for cutting said web comprising a nozzle extending into said first winding station, a source of compressed air to which said nozzle is connected, means for causing said nozzle to direct a number of air blasts toward said web at agiven moment in order to sever said web, and said nozzle being pointed into the space between a pasteboard cylinder in said rst winding station, said winding roller and said drum for forcing the free end of said web into 'said space after the severing thereof.

8. A machine for winding a web from a large supply roll into smaller rolls comprising a drum adapted to feed the web from the supply roll, two winding stations `stu ated at the periphery of the drum and in series in the direction of the travel of the web, said stations being passed through by each smaller roll, means for cutting said web before a smaller roll leaves the second winding station, a winding roller driven in the same direction as said drum, a freely rotatable load roller elevatable by a smaller roll as it increases in size during the winding of the web thereon, said winding roller, load roller and said feeding drum together defining said first winding station, said winding roller being swingable away from said drum at a certain predetermined diameter of a smaller roll for permitting the smaller roll to fall down to the second winding station, said means for cutting said web comprising a plurality of nozzles extending into said first winding station, said feeding drum having a plurality of spaced axially arranged sections, and said air nozzles being positioned in the spaces between said sections, a source of compressed air to which said nozzles are connected, means for causing said nozzles to direct a number of air blasts toward said web at a given moment in order to sever it, and said nozzles being pointed into the space between a pasteboard cylinder fed into said rst winding station, said winding roller and said drum for forcing the free end of said web from said supply roll into said space after the severing thereof.

9. A machine for winding a web from a large supply roll into smaller rolls comprising a drum adapted to feed the web from the supply roll, two winding stations situated at the periphery of the drum and in series in the direction of the travel of the web, said stations being passed through by each smaller roll, means for cutting said web before a smaller roll leaves the second winding station, a winding roller driven in the same direction as said drum, a freely rotatable load roller elevatable by a smaller roll as it increases in size during the winding of the web thereon, said winding roller, load roller and said feeding drum together defining said first winding station, said winding roller being swingable away from said drum at a certain predetermined diameter of a smaller roll for permitting the smaller roll to fall down to the second winding station, said winding roller in said first station having peripheral grooves therein, and said load roller having peripheral llanges engageable in said peripheral grooves.

10. A machine for winding a web from a large supply roll into smaller rolls comprising a drum adapted to feed the web from the supply roll, two Winding stations situated at the periphery of the drum and in series in the direction of the travel of the web, said stations being passed through by each smaller roll, means for cutting said web before a smaller roll leaves the second winding station, a winding roller driven in the same direction as said drum, a freely rotatable load roller elevatable by a smaller roll as it increases in size during the winding of the web thereon, said winding roller, load roller and said feeding drum together defining said rst winding station, said winding roller being swingable away from said drum at a certain predetermined diameter of a smaller roll for permitting the smaller roll to fall down to the second winding station, said means for cutting said web comprising a plurality of nozzles extending into said first winding station, said feeding drum having a plurality of spaced axially arranged sections, and said air nozzles being positioned in the spaces between said sections, a source of compressed air to which said nozzles are connected, means for causing said nozzles to direct a number of air blasts toward said web at a given moment in order to sever it, and said nozzles being pointed into the space between a pasteboard cylinder fed into said rst winding station, said winding roller and said drum for forcing the free end of said web from said supply roll into said space after the severing thereof, and upwardly inclined resilient means in said spaces between said sections arranged for feeding the end of said web from said supply roll into said rst winding station.

1l. A machine for windin-g a web from a large supply roll into smaller rolls comprising a drum adapted to feed the web from the supply roll, two winding stations situated at the periphery of the drum and in series in the direction of the travel of the web, said stations being passed through by each smaller roll, means for cutting said web before a smaller roll leaves the second winding station, a winding roller driven in the same direction as said drum, a freely rotatable load roller elevatable by a smaller roll as it increases in size during the winding of the web thereon, said winding roller, load roller and said feeding drum together defining said first winding station, said winding roller being swingable away from said drum at a certain predetermined diameter of a smaller roll for permitting the smaller roll to fall down to the second winding station, said cutting means comprising resilient elements, and means for momentarily pressing said elements against 10 said web running past said rst winding station toward said second winding station, said drum serving as an abutment for said resilient elements.

12. A machine for winding a web from a large supply roll into smaller rolls comprising a drum adapted to feed the web from the supply roll, two winding stationssituated at the periphery of the drum and in series in the direction of the travel of the web, said stations being passed through by each smaller roll, means for cutting said web before a smaller roll leaves the second winding station, a Winding roller driven in the same direction as said drum, a freely rotatable load roller elevatable by a smaller roll as it increases in size during the winding of the web thereon, said winding roller, load roller and said feeding drum together defining said first winding station, said winding roller being swingable away from said drum at a certain predetermined diameter of a smaller roll for permitting the smaller roll to fall down to the second winding station, said cutting means comprising resilient elements, and means for momentarily pressing said elements against said web running past said first winding station toward said second winding station, said drum serving as an abutment for said resilient elements, said means for pressing said resilient elements against said drum moving said resilient elements in a direction to force the free end of the cut web coming from the supply roll upwardly and into said first winding station.

13. A machine for winding a web from a large supply roll into smaller rolls comprising a drum adapted to feed the web from the supply roll, two winding stations situated at the periphery of the drum and in series in the direction of the travel of the web, said stations being passed through by each smaller roll, means for cutting said web before a smaller roll leaves the second winding station, a winding roller driven in the same direction as said drum, a freely rotatable load roller elevatable by a smaller roll as it increases in size during the winding of the web thereon, said winding roller, load roller and said feeding drum together dening said first winding station, said winding roller being swingable away from said drum at a certain predetermined diameter of a smaller roll for permitting the smaller roll to fall dow-n to the second Winding station, said cutting means comprising resilient elements, and means for momentarily pressing said elements against said web running past said first winding station toward said second winding station, said drum serving as an abutment for said resilient elements, said winding roller in said first winding station comprising a plurality of circular discs, a shaft on which said discs are mounted, and spacers between each disc, and said means for pressing said resilient elements against said drum comprising a plurality of forks each having a lower free branch on which said resilient elements are mounted, and an eccentrically journalled shaft on which said forks are mounted, one of said forks arranged loosely around each spacer, whereby said shaft presses said forks and said resilient elements against said feeding drum for cutting said web.

14. A machine for winding a web from a large supply roll into smaller rolls comprising a drum adapted to feed the web from the supply roll, two winding stations situated at the periphery of the drum and in series in the direction of the travel of the web, said stations |being passed through by each smaller roll, means for cutting said web before a smaller roll leaves the second winding station, a winding roller driven in the same direction as said drum, a freely rotatable load roller elevatable by a smaller roll as it increases in size during the winding of the web thereon, said winding roller, load roller and said feeding drum together defining said first winding station, said winding roller being swingable away from said drum at a certain predetermined diameter of a smaller roll for permitting the smaller roll to fall down to the second winding station, said cutting means comprising resilient elements, and means for momentarily pressing said elements ra'gainst'said web running past said first winding station toward said second winding station, said drum serving as an abutment for said resilient elements, said means for pressing said resilient elements against said drum moving said resilient elements in a direction to force'the free end of the cut web coming from the supply roll upwardly and into said rst winding station, said resilient elements consisting of bent at steel springs having a loop at the -bend thereof.

15. A machine for winding a web from a large supply roll into smaller rolls comprising a drum adapted to feed the web from the supply roll, two winding stations situated at the periphery of the drum and in series in the direction of the travel of the web, said stations being passed through 1by each smaller roll, means for cutting said web before a smaller roll leaves the second winding station, a winding roller driven in the same direction as said drum, a freely rotatable load roller elevatable by a smaller 'roll as it increases in size during the winding of the web thereon, said winding roller, load roller and said feeding drum together defining said first winding station, said winding roller being swingable away from said drum at a certain predetermined diameter of a smaller roll for permitting the smaller roll to fall down to the second Y12 winding station, said cutting ymeanscomprising resilient elements, and'means for momentarily pressing said elements lagainst said web running past said first winding mounted,V one of said works arranged loosely around each spacer, whereby said shaft presses said forks and said resilient elements'against said feeding drum for cutting said web, saidresilient elements comprising casings of elastic material.

References Cited in the tile of this patent UNITED STATES PATENTS 1,966,525 Schultz et al. July 17, 1934 2,385,692 Corbin et al Sept. 25, 1945 2,569,797 Campbell Oct. 2, 1951